Exercise device



FIG. 1 is a front perspective view of my exercise device;

FIG. 2 is a right side elevational view therein with the left side elevational view being a mirror image thereof; and,

FIG. 3 is a front view thereof.

The broken line portions of the disclosure are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for an exercise device, as shown and described. 